White grubs are root-infesting larvae that are the immature stages of scarab beetles. Grub-infested turfgrass may turn brown and die from drought stress due to the inability to take up water from loss of roots.
Up to My Eyeballs in Lawngrasses - Neil Sperry's GARDENS
Does grub damage show up this time of year?
Grub Damage in a Lawn
Garden SDSU Extension
White Grubs [fact sheet]
White Grub Season is Upon Us - Gingrich Horticulture
white grub damage On the Lawn with Weed Man
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How to Get Rid of Grubs in Indiana